Worksheet: Addition Patterns

In this worksheet, we will practice identifying, describing, and making addition patterns using methods such as addition tables.

Q1:

Complete the pattern: 9=9,9+11=20,9+11+13=33,…,….

A9+11+13+15=48, 9+11+13+15+17=65

B9+11+13+14=47, 9+11+13+15+17=65

C9+11+13+15=48, 9+11+13+15+16=64

D9+11+13+14=47, 9+11+13+14+15=62

Q2:

Two students are making a number pattern that starts at 3 with the rule add 5.

Hannah notices that the units digits are always 3 or 8 and that it follows a repeating pattern: 3, 8, 3, 8. She says that the numbers in the shaded boxes will always have 3 in the units place. Do you agree? Why?

Ayes, because 3+5=8

Bno, because 5+5=10, and when you add 10 the units digit will change

Cyes, because 5+5=10, and the units digit does not change when you add 10

Dno, because 3+5=8

Eno, because 8+5=13

Q3:

Noah starts a pattern with the number 9, and his pattern rule is adding 10. Choose Noah’s pattern.